公开(公告)号：US12143566B2

公开(公告)日：2024-11-12

申请号：US17567515

申请日：2022-01-03

Applicant: KT CORPORATION

Inventor： Bae Keun Lee ,  Joo Young Kim

IPC: H01L29/94 ,  H04N19/105 ,  H04N19/117 ,  H04N19/157 ,  H04N19/176 ,  H04N19/59 ,  H04N19/593

Abstract: Provided is a method for decoding a video signal. The method includes generating a first prediction sample by performing intra prediction on a current block, determining an intra prediction pattern of a current block, partitioning the current block into a plurality of sub-blocks based on the determined intra prediction pattern, generating a first prediction sample for a sub-block by performing intra prediction, determining an offset for the sub-block to obtain a second prediction sample, and generating the second prediction sample for the sub-block by using the first prediction sample and the offset.

公开(公告)号：US11743472B2

公开(公告)日：2023-08-29

申请号：US17357381

申请日：2021-06-24

Applicant: KT CORPORATION

Inventor： Bae Keun Lee ,  Joo Young Kim

IPC: H04N19/159 ,  H04N19/50 ,  H04N19/70 ,  H04N19/182 ,  H04N19/105 ,  H04N19/436 ,  H04N19/513 ,  H04N19/93 ,  H04N19/94

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/182 ,  H04N19/436 ,  H04N19/50 ,  H04N19/513 ,  H04N19/70 ,  H04N19/93 ,  H04N19/94

Abstract: A method for processing a video signal according to the present invention comprises: determining a length of a current string, which is decoded on the basis of a sample string matching technique in a current block; determining a reference string on the basis of at least one between the length of the current string and a string vector for the current string; and predicting the current string using the reference string.

公开(公告)号：US10743244B2

公开(公告)日：2020-08-11

申请号：US15667146

申请日：2017-08-02

Applicant: KT Corporation

Inventor： Yang Seok Jeong ,  Joo Young Kim

IPC: H04W48/10 ,  H04W48/16 ,  H04W48/14 ,  H04W84/12

Abstract: Disclosed is an active scanning method in a wireless LAN system. The active scanning method comprises: a step of transmitting a probe request frame via a predetermined channel; and a step of receiving, from an access point, a probe response frame corresponding to the probe request frame via a predetermined channel. The probe response frame includes main channel information on the access point. Thus, the access point can be quickly scanned.

公开(公告)号：US10721672B2

公开(公告)日：2020-07-21

申请号：US15926241

申请日：2018-03-20

Applicant: KT Corporation

Inventor： Yang Seok Jeong ,  Joo Young Kim

IPC: H04W40/22 ,  H04W52/02 ,  H04W12/00 ,  H04W12/06 ,  H04W84/12 ,  H04W12/04

Abstract: Disclosed are a method and a device for transmitting and receiving data in a wireless LAN system. A connection method performed in a terminal comprises the steps of: transmitting a probe request frame; receiving, from a main-access point, a probe response frame which is a response to the probe request frame; and transmitting, to the main-access point, an ACK frame which is a response to the probe response frame if it is determined that an operation is performed in an uplink relay mode on the basis of information included in the probe response frame. Thus, the wireless transmission efficiency of a wireless LAN system is capable of being improved.

公开(公告)号：US10602168B2

公开(公告)日：2020-03-24

申请号：US15953722

申请日：2018-04-16

Applicant: KT CORPORATION

Inventor： Bae Keun Lee ,  Joo Young Kim

IPC: H04N19/33 ,  H04N19/117 ,  H04N19/70 ,  H04N19/174 ,  H04N19/187 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/82 ,  H04N19/182 ,  H04N19/59 ,  H04N19/50 ,  H04N19/436

Abstract: A scalable video signal decoding method, according to the present invention, determines a corresponding picture belonging to a lower layer used for an inter-layer prediction of a current picture belonging to an upper layer, performs the inter-layer prediction of the current picture by using the corresponding picture of the determined lower layer, restores the current picture by using a prediction sample acquired through the inter-layer prediction and a residual sample of the current picture, and selectively applies a loop filter to a tile boundary of the restored current picture on the basis of a layer filter flag for the upper layer.

公开(公告)号：US10602166B2

公开(公告)日：2020-03-24

申请号：US15969988

申请日：2018-05-03

Applicant: KT CORPORATION

Inventor： Bae Keun Lee ,  Joo Young Kim

IPC: H04N19/33 ,  H04N19/30 ,  H04N19/105 ,  H04N19/70 ,  H04N19/157 ,  H04N19/187 ,  H04N19/58 ,  H04N19/44 ,  H04N19/52 ,  H04N19/159 ,  H04N19/55 ,  H04N19/593 ,  H04N19/503 ,  H04N19/46 ,  H04N19/59

Abstract: A method for decoding a scalable video signal, according to the present invention, comprises: determining a corresponding picture belonging to a lower layer, which is used for inter-layer prediction of a current picture belonging to an upper layer; and performing inter-layer prediction of the current picture by using the determined corresponding picture in the lower layer, wherein the inter-layer prediction is limitedly performed depending on tile alignment between the upper layer and the lower layer.

公开(公告)号：US10575015B2

公开(公告)日：2020-02-25

申请号：US14605201

申请日：2015-01-26

Applicant: KT CORPORATION

Inventor： Bae Keun Lee ,  Jae Cheol Kwon ,  Joo Young Kim

IPC: H04N19/61 ,  H04N19/12 ,  H04N19/625 ,  H04N19/44 ,  H04N19/176 ,  H04N19/122 ,  H04N19/157 ,  H04N19/18 ,  H04N19/194 ,  H04N19/96 ,  H04N19/513 ,  H04N19/124 ,  H04N19/147

Abstract: The present invention relates to a technique for encoding and decoding an image, and a method for encoding the image, according to the present invention, comprises the steps of: performing a prediction with respect to a current block; and transforming a residual which is generated by the prediction, wherein in the step of transforming, a first transform is performed on the residual, and then a second transform is performed on a lower frequency area, and wherein a mode of the second transform can be decided on the basis of a mode of the first transform.

公开(公告)号：US10419759B2

公开(公告)日：2019-09-17

申请号：US16041989

申请日：2018-07-23

Applicant: KT CORPORATION

Inventor： Bae Keun Lee ,  Jae Cheol Kwon ,  Joo Young Kim

IPC: H04N19/11 ,  H04N19/12 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/86 ,  H04N19/91

Abstract: Disclosed is an adaptive transform method based on an in-screen prediction, and an apparatus using the method. A method for encoding an image can comprise a step of determining in-screen prediction mode groups, and a step of transforming by using a different transform method according to the in-screen prediction mode group. As a result, transforming can be performed by applying the different transform method according to the in-screen prediction mode group.

公开(公告)号：US10257531B2

公开(公告)日：2019-04-09

申请号：US15125689

申请日：2015-03-18

Applicant: KT CORPORATION

Inventor： Bae Keun Lee ,  Joo Young Kim

IPC: H04N19/597 ,  H04N19/593 ,  H04N19/51 ,  H04N19/44 ,  H04N19/503 ,  H04N19/50 ,  H04N13/161 ,  H04N19/46 ,  H04N19/513 ,  H04N13/00

Abstract: A method for processing multiview video signals, according to the present invention, comprises: generating a merge candidate list with respect to a current block; inducing a motion vector of the current block on the basis of a merge index of the current block, which has been obtained from a bitstream; obtaining a prediction value of the current block using the motion vector; and reconstructing the current block by adding the prediction value and a residual value of the current block.

公开(公告)号：US10200702B2

公开(公告)日：2019-02-05

申请号：US15859508

申请日：2017-12-30

Applicant: KT CORPORATION

Inventor： Bae Keun Lee ,  Joo Young Kim

IPC: H04N19/30 ,  H04N19/58 ,  H04N19/70 ,  H04N19/105 ,  H04N19/44 ,  H04N19/597 ,  H04N19/463 ,  H04N19/157 ,  H04N19/187

Abstract: An image decoding method supporting a plurality of layers according to the present invention may comprise the steps of: when an initial reference picture list of a current picture is configured, receiving flag information indicating whether reference picture set information of a reference layer to which the current picture refers is used; generating the initial reference picture list on the basis of the flag information; and predicting the current picture on the basis of the initial reference picture list. Accordingly, the present invention provides a method for generating a reference picture list including a picture of a layer, which is different from a layer to be currently encoded and decoded, and an apparatus using the same.